HEIDENHAIN TNC 640 User Manual page 32

Modified functions 34059x-08
If you use locked tools, the control displays a warning in
the Programming and Test Run operating modes, see
"Programming graphics", page 220, see "Test run",
page 818
The M94 miscellaneous function is effective for all rotary axes
that are not limited by software limit switches or traverse limits,
see "Reducing display of a rotary axis to a value less than 360°:
M94", page 619
The control offers a positioning logic for returning to the contour,
see "Returning to the contour", page 839
The positioning logic for returning to the contour with a
replacement tool has changed, see "Tool change", page 260
If the control finds a stored interruption point on restart, you can
resume the machining operation from that point, see "Entering
the program at any point: Mid-program startup", page 833
Axes that are not active in the current kinematic model can
also be referenced in a tilted working plane, see "Crossing the
reference point in a tilted working plane", page 717
The TRANS DATUM AXIS NC syntax can also be used within a
contour in the SL cycle.
Holes and threads are shown in light blue in the programming
graphics, see "Programming graphics", page 220
The tool is shown in red in the graphics while it is in contact
with the workpiece, and blue during air cuts, see "Tool display",
page 813
The positions of the sectional planes are no longer reset when
a program or a new blank form is selected, see "Projection in
three planes", page 811
Spindle speeds can be entered with decimal places also in
the Manual operation mode. The control displays the decimal
places when the spindle speed is < 1000, see "Entering values",
page 732
The sort order and the column widths in the tool selection
window are retained when the control is switched off, see
"Calling the tool data", page 258
If a file to be deleted does not exist, FILE DELETE no longer
generates an error message.
If a subprogram called with CALL PGM ends with M2 or M30,
the control issues a warning. The control automatically clears
the warning as soon as you select another NC program, see
"Programming notes", page 362
The control displays an error message in the header until it is
cleared or replaced by a higher-priority error, see "Display of
errors", page 224
The time needed to paste a large amount of data into an
NC program was considerably reduced.
To connect a USB stick you no longer have to press a soft
key, see "Connecting and removing USB storage devices",
page 190
The speed of setting the jog increment, spindle speed and feed
rate was adjusted for electronic handwheels.
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Fundamentals | Control model, software and features
HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017